Grate.



P. SOHOEN.

GRATE.

APPLICATION FILED AUG. 10, 1907.

' Patented Nov. 3, 1908.

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P. SOHOEN.

GRATE. APPLICATION FILED AUG. 10, 1907.

Patented Nov, 3, 1908.

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PETER SOHOEN,

OF PITTSBURG, PENNSYLVANIA.

GRATE Application filed. August 10, 1907.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Serial No. 387,951.

To all whom it may concern:

Be it known that 1, PETER SOHOEN, a citizen of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Grates, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to grates, designed for furnaces and stoves, and its primary object is, to provide a grate which may be readily shaken to free its bars from ashes and clinkers.

A further object of the invention is, to provide a grate, with grate-bars of improved construction capable of being quickly placed in position within the frame of the grate, and easily removed therefrom when necessary.

The invention consists of a frame, and grate bars of improved construction, and in the combination therewith, of novel means for oscillating said grate bars.

The construction of the improvement will be fully described hereinafter, in connection with the accompanying drawing which forms a part of this application, and its novel features will be set forth, and defined in the appended claims.

In the drawings, Figure 1 is a top plan view of a grate embodying the invention, the furnace walls being shown in horizontal section, Fig. 2 is a side elevation of the grate, Fig. 3 is a central vertical longitudinal section of the grate, Fig. 41 is a perspective view of one of the grate-bars removed, Fig. 5 is a top plan view of a modification showing the invention embodied in a circular grate, and Fig. 6 is an elevation of the grate with vertical grate-bars.

Referring to Figs. 1, 2 and 3, the reference numeral 1 designates the side walls, and 2 the end-walls of a furnace, said end walls 2 being provided with bearings 3 and 4: to receive the pivotal supports of the frame of the grate. This frame 5 is of rectangular form and formed at one end with a journal 6, seated in the bearing 3, and at its opposite end with a trunnion 7, extending through the bearing 4 of the adjacent furnace wall. One side 8 of the frame 5 is formed with circular openings 9 serving as bearings for the journals 10 of the grate-bars 11, and the opposite side 8 of said frame is formed with semi-circular recesses or half-bearings 12 to receive the journals 13 at the opposite ends of the bars 11. These journals 13 are secured in position by a removable bar let formed on its lower edge with semi-circular recesses 15 registering with the recesses 12 and forming ther with circular bearings for the journals 13 of the grate-bars. The bar 1% is removably secured to the side 8 of the frame by screws 16, thus permitting the grate-bars to be placed in position or removed when necessary.

The upper side of each of the grate-bars is oppositely beveled from its longitudinal center toward its edges to provide oppositely 1nclined surfaces 17 to facilitate the discharge of ashes therefrom. The edges of the gratebars are notched to provide projections 18, the projections being so disposed that those on the edge of one bar will be opposite the notches on' the next adjacent bar, to permit the bars to oscillate without contact, and to provide the maximum supporting surface for the fuel. From the under surface of each of the grate-bars depends an integral loop 19, which is circular in cross-section for the greater part of its length, but reduced in thickness as shown at 20 to rectangular form in cross-section to permit-of its attachment to the grate-bars of a shaker-bar 21.

The shaker-bar 21 is formed on its upper edge with circular bea ings 22 for the loops 19, said bearings being open at their upper ends to permit of the passage therethrough of the flattened or reduced ends of the loops 19. The projections 23 between the bearings 22 of the shaker-bar 21 are scalloped at their upper edges to provide rounded bearing surfaces 2& upon which the oppositely beveled under surfaces 24: of the grate-bars will rock easily with little friction. The shaker-bar 21 extends upward at one end and is provided with an arm 25 which extends through a longitudinal recess 26 formed on the upper side of the shaft 7 of the grate frame. From 0pposite sides of the outer end 27 of the arm 25 project pins 28 adapted to be engaged by the forks 29 of a lever 30. The depending curved end 31 of the lever enters a slot 32 formed in the horizontal portion 33 of an angle bracket 34L mounted upon the outer end of the trunnion 7 and secured thereto by a set screw 35, or other suitable means.

The utility and operation of ment will be readily understood.

the improve- The bracket 34 serves as a fulcrum for the lever 30, and by the manipulation of said lever the shaker bar is longitudinally reciproeated, thus oscillating the grate-bars. The lever 30 when not in use is easily removed from its engagement with the said pins 28 and slot 32. The construction of the frame, the grate bars and the shaker-bar facilitates the assembling of the parts, and permits of the ready remo val of one or more of the grate-bars, when broken or unduly worn.

In the modification shown in Fig. 5 a circular frame 5 is employed instead of a rectangular frame, and the removable bar lat is curved to conform to the circular frame. The construction of the shaker-bar is similar to that already described but the grate-bars ll are of varying length as shown to adapt them to fit within the circular frame. ln other respects these bars are similar to the bars 11 shown in the other figures of the drawing. The frame 5 is adapted to be tilted upon its pivots to dump the grate by means of the lever 30, and a cleat 36 is located below the grate at one side and secured to the furnace walls to prevent the grate frame from turning except in one direction.

In Fig. 0 of the drawings, I have illustrated the grate as used with vertical bars L0, showing the grate and bars as they would appear if used in a stove.

Having now described my invention what I claim as new, is

In a grate, the combination with a pivoted frame formed with bearings, of grate-bars having journals supported in said bearings, and each having an integral depending loop flattened or reduced in cross section at one end, a shaker-bar formed with circular bearings for said loops open at their upper ends for the passage of the reduced portions of said loops and having rounded bearing surfaces between said circular bearings for the grate bars to rest upon, the said pivoted frame having an outwardly-extending trunnion longitudinally-recessed for slidably-retaining an operating arm of the shaker-bar, and means for partially rotating said frame and reciprocating said shaker-bar, comprising an arm projecting from said bar and received in the recessed trunnion of the frame, a slotted bracket on said recessed trunnion, pins projecting from said arm, and a lever removably engaging said pins and the slotted bracket.

In testimony whereof I aflix my signature in the presence of two witnesses.

Max H. SRoLOVITZ, K. H. BUTLER. 

